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Datenbanken SS20
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Linnea Schmitt
Datenbanken SS20
Commits
39b8c069
Commit
39b8c069
authored
May 13, 2020
by
Linnea Schmitt
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39b8c069
--Die Reihenfolge ist nicht mehr in der Reihenfolge in der ich sie bearbeitet habe, da ursprnglich nicht alles in einer Datei hatte.
-- Tabelle employees erstellen
create
table
employees
(
employee_id
smallint
not
null
,
last_name
character
varying
(
20
)
not
null
,
first_name
character
varying
(
30
)
not
null
,
title
character
varying
(
30
),
title_of_courtesy
character
varying
(
25
),
birth_date
date
,
hire_date
date
,
address
character
varying
(
60
),
city
character
varying
(
15
),
region
character
varying
(
15
),
postal_code
character
varying
(
10
),
country
character
varying
(
15
),
home_phone
character
varying
(
24
),
extension
character
varying
(
4
),
photo
bytea
,
notes
text
,
reports_to
smallint
,
photo_path
character
varying
(
255
)
);
--Tabell regions erstellen
create
table
regions
(
region_id
integer
,
region_headquarter_city
character
varying
(
40
)
not
null
);
--Tabelle employees_regions erstellen
create
table
employees_regions
(
employee_id
smallint
,
region_id
integer
);
--Werte in Tabelle regions einfgen
insert
into
regions
(
region_id
,
region_headquarter_city
)
values
(
1
,
'Mainz'
),
(
2
,
'Madrid'
),
(
3
,
'Miami'
),
(
4
,
'Rio de Janeiro'
);
--Primrschlssel erstellen
alter
table
employees
add
constraint
pk_employees
primary
key
(
employee_id
);
alter
table
employees_regions
add
constraint
pk_employee_regions
primary
key
(
employee_id
,
region_id
);
--Fremdschlssel erstellen
alter
table
employees
add
foreign
key
(
reports_to
)
references
employees
(
employee_id
);
alter
table
orders
add
foreign
key
(
employee_id
)
references
employees
(
employee_id
);
alter
table
employees_regions
add
foreign
key
(
employee_id
)
references
employees
(
employee_id
);
alter
table
employees_regions
add
foreign
key
(
region_id
)
references
regions
(
region_id
);
--Spalte Handynummer zur Tabelle employees hinzufgen
alter
table
only
employees
add
column
MobilePhoneNumber
character
varying
(
25
);
-- Spalte Handynummer ausfllen
update
employees
set
mobilephonenumber
=
52835397253836
;
--Index erstellen
create
index
idx_employees_last_name
on
employees
(
last_name
);
\ No newline at end of file
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